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A324962 a(n) is the coefficient of y^n in Product_{k=0..n} (1 + (k+2)*y + y^2), for n >= 0. 2
1, 5, 29, 196, 1519, 13293, 129681, 1395504, 16420458, 209724450, 2889435185, 42711906510, 674273776409, 11321518590991, 201460954569411, 3787078288117632, 74989404135333176, 1560115234974759624, 34021998346437480754, 776044059807136053020, 18479631810762197072198, 458571995526115351079650, 11839067860288617013759941, 317516454727719391340475084, 8833750915068037494754203780, 254617921422661239086243462460, 7594011177768010264119760374795 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

a(n) = A324960(n+1,n) for n >= 0.

LINKS

Table of n, a(n) for n=0..26.

PROG

(PARI) {a(n) = polcoeff( prod(m=0, n, 1 + (m+2)*y + y^2 +y*O(y^n)), n, y)}

for(n=0, 30, print1(a(n), ", "))

CROSSREFS

Cf. A324960, A324961.

Sequence in context: A188143 A095000 A086672 * A306932 A201856 A201115

Adjacent sequences:  A324959 A324960 A324961 * A324963 A324964 A324965

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Mar 20 2019

STATUS

approved

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Last modified May 19 04:20 EDT 2022. Contains 353826 sequences. (Running on oeis4.)