A085505 a(n) = ceiling(((1*n^0 + 1*n^1 + 2*n^2 + 4*n^3)/(1*n^0 + 2*n^1 + 1*n^2))^2).

4, 23, 67, 138, 239, 371, 534, 728, 954, 1212, 1501, 1822, 2175, 2560, 2977, 3425, 3906, 4419, 4963, 5539, 6148, 6788, 7461, 8165, 8901, 9669, 10470, 11302, 12166, 13062, 13990, 14951, 15943, 16967, 18023, 19111, 20231, 21384, 22568

Offset

1,1

Links

Table of n, a(n) for n=1..39.

Mathematica

Table[Ceiling[((1+n+2n^2+4n^3)/(1+2n+n^2))^2], {n, 40}] (* Harvey P. Dale, Jun 14 2011 *)

Crossrefs

Cf. A085899, A086790, A086814, A086822.

Sequence in context: A179628 A339392 A030653 * A065972 A132112 A226411

Adjacent sequences: A085502 A085503 A085504 * A085506 A085507 A085508

Keyword

easy,nonn

Author

Wang Dan (wangdan01(AT)lycos.com), Aug 19 2003

Extensions

Corrected by M. F. Hasler, Jul 23 2007

Status

approved