A074648 a(n)=A074639(A074647(n)).

0, 0, 1, 5, 11, 31, 75, 91, 145, 225, 241, 319, 419, 599, 727, 949, 803, 1115, 1353, 1219, 1869, 2085, 2285, 2583, 3101, 4347, 4683, 5009, 5921, 5717, 6467, 7473, 7573, 8675, 9423, 8615, 10147, 10837, 12797, 13167, 13249, 14341, 15321

Offset

1,4

Links

Table of n, a(n) for n=1..43.

Crossrefs

Cf. A074639.

Sequence in context: A246010 A077446 A023276 * A236428 A106908 A107442

Adjacent sequences: A074645 A074646 A074647 * A074649 A074650 A074651

Keyword

nonn

Author

Michele Dondi (bik.mido(AT)tiscalinet.it), Sep 18 2002

Status

approved