A154798 Even partition numbers of even numbers.

2, 22, 42, 1002, 2436, 3718, 5604, 12310, 37338, 53174, 105558, 204226, 715220, 1300156, 1741630, 2323520, 4087968, 7089500, 12132164, 15796476, 26543660, 34262962, 92669720, 118114304, 150198136, 190569292, 384276336, 483502844

Offset

1,1

Comments

Even numbers in A058696.

Links

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

Maple

aa:= proc(n, i) if n=0 then 1 elif n<0 or i=0 then 0 else aa(n, i):= aa(n, i-1) +aa(n-i, i) fi end: a:= proc(n) local k; if n>1 then a(n-1) fi; for k from `if`(n=1, 0, b(n-1)+2) by 2 while irem(aa(k, k), 2)=1 do od; b(n):= k; aa(k, k) end: seq(a(n), n=1..40); # Alois P. Heinz, Jul 28 2009

Mathematica

Select[Table[PartitionsP[n], {n, 0, 200, 2}], EvenQ] (* Jean-François Alcover, Aug 28 2015 *)

Prog

(PARI) select(x->!(x%2), vector(80, n, numbpart(2*n))) \\ Michel Marcus, Aug 28 2015

Crossrefs

Cf. A000041, A005843, A058696, A154795, A154796, A154797.

Sequence in context: A019593 A060108 A221762 * A350318 A080142 A364484

Adjacent sequences: A154795 A154796 A154797 * A154799 A154800 A154801

Keyword

nonn

Author

Omar E. Pol, Jan 26 2009

Extensions

More terms from Alois P. Heinz, Jul 28 2009

Status

approved