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A026152
a(n) = T(n,n-1), where T is the array in A026148.
0
1, 4, 10, 29, 81, 230, 652, 1854, 5278, 15048, 42956, 122772, 351300, 1006344, 2885952, 8285001, 23809113, 68490060, 197211394, 568385609, 1639635613, 4734036134, 13679894484, 39562904855, 114507905551, 331674931656, 961408814434
OFFSET
2,2
FORMULA
Conjecture: -(n+7)*(31*n-87)*a(n) +(164*n^2+313*n-2115)*a(n-1) +(-182*n^2+229*n+891)*a(n-2) +(-164*n^2+59*n+519)*a(n-3) +3*(71*n-104)*(n-3)*a(n-4)=0. - R. J. Mathar, Jun 23 2013
CROSSREFS
First differences of A026163.
Sequence in context: A321344 A329156 A052946 * A025179 A116388 A221420
KEYWORD
nonn
STATUS
approved