A305297 Restricted growth sequence transform of A292260, formed from 0-digits in ternary representation of A245612(n).

1, 1, 1, 2, 1, 1, 1, 1, 1, 3, 4, 1, 1, 3, 4, 2, 1, 5, 6, 7, 8, 2, 4, 8, 1, 9, 1, 2, 8, 10, 1, 1, 1, 11, 12, 1, 5, 13, 14, 15, 6, 4, 1, 7, 8, 16, 7, 9, 1, 17, 18, 19, 1, 8, 8, 3, 6, 17, 20, 4, 1, 17, 4, 3, 1, 21, 22, 23, 24, 25, 4, 26, 27, 1, 24, 28, 29, 9, 5, 4, 5, 13, 10, 30, 1, 31, 14, 13, 6, 32, 33, 6, 34, 15, 18, 4, 1, 35, 6, 31, 36, 1, 30, 36, 1, 37

Offset

0,4

Comments

For all i, j: a(i) = a(j) => A292261(i) = A292261(j).

Links

Antti Karttunen, Table of n, a(n) for n = 0..65537

Prog

(PARI)
A003961(n) = my(f = factor(n)); for (i=1, #f~, f[i, 1] = nextprime(f[i, 1]+1)); factorback(f); \\ From A003961
A048673(n) = (A003961(n)+1)/2;
A254049(n) = A048673((2*n)-1);
A245612(n) = if(n<2, 1+n, if(!(n%2), (3*A245612(n/2))-1, A254049(A245612((n-1)/2))));
A291770(n) = { my(s=0, b=1, d); while(n>2, if(!(n%3), s += b); b <<= 1; n \= 3); (s); };
A292260(n) = A291770(A245612(n));
rgs_transform(invec) = { my(om = Map(), outvec = vector(length(invec)), u=1); for(i=1, length(invec), if(mapisdefined(om, invec[i]), my(pp = mapget(om, invec[i])); outvec[i] = outvec[pp] , mapput(om, invec[i], i); outvec[i] = u; u++ )); outvec; };
v305297 = rgs_transform(vector(65538, n, A292260(n-1)));
A305297(n) = v305297[1+n];

Crossrefs

Cf. A291770, A292260, A245612, A292261.

Cf. also A305296, A305298.

Cf. also A304750.

Sequence in context: A298848 A193518 A060176 * A218220 A247487 A010248

Adjacent sequences: A305294 A305295 A305296 * A305298 A305299 A305300

Keyword

nonn

Author

Antti Karttunen, May 31 2018

Status

approved