A117168 Column 3 of triangle A117165 of Shift-Moebius coefficients and so equals the Shift-Moebius transform of [0,0,1,0,...].

0, 0, 1, 0, 0, -1, -1, -1, -2, -1, -2, -1, -1, 0, -2, 1, 0, 2, 1, 4, 1, 5, 3, 6, 6, 7, 4, 8, 8, 10, 8, 10, 8, 12, 9, 10, 10, 10, 8, 10, 8, 9, 6, 7, 7, 5, 5, 3, 4, 1, -4, -5, -4, -7, -6, -13, -12, -17, -15, -20, -18, -28, -29, -37, -31, -40, -37, -47, -42, -55, -51, -62, -59, -69, -65, -78, -69, -84, -75, -93

Offset

1,9

Links

Table of n, a(n) for n=1..80.

Prog

(PARI) {a(n)=prod(i=0, n+2, matrix(n+2, n+2, r, c, if(r>=c, if((r+n+2-i)%(c+n+2-i)==0, moebius((r+n+2-i)/(c+n+2-i)), 0))))[n, 3]}

Crossrefs

Cf. A117165 (triangle), A117166 (column 1), A117167 (column 2), A117169 (row sums).

Sequence in context: A322305 A020951 A117118 * A355343 A287160 A029443

Adjacent sequences: A117165 A117166 A117167 * A117169 A117170 A117171

Keyword

sign

Author

Wouter Meeussen and Paul D. Hanna, Mar 05 2006

Status

approved