A080525 First column of triangle in A080524.

1, 1, 8, 61, 623, 7771, 117646, 2097145, 43046717, 999999991, 25937424596, 743008370677, 23298085122475, 793714773254131, 29192926025390618, 1152921504606846961, 48661191875666868473, 2185911559738696531951

Offset

1,3

Links

Table of n, a(n) for n=1..18.

Maple

A080525 := proc(n) if n mod 2 <> 0 then n^(n-1)+(2-n-1)/2 ; else n^(n-1)+(2-n-1) ; fi ; end: for n from 1 to 30 do printf("%d, ", A080525(n)) ; od ; # R. J. Mathar, Apr 01 2007

Crossrefs

Cf. A080524, A080526.

Sequence in context: A363571 A361772 A327761 * A362944 A001466 A182257

Adjacent sequences: A080522 A080523 A080524 * A080526 A080527 A080528

Keyword

nonn

Author

Amarnath Murthy, Mar 21 2003

Extensions

More terms from R. J. Mathar, Apr 01 2007

Status

approved