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A246659 a(n) = binomial(n-h,h)*hypergeometric([h-n/2,h-(n-1)/2],[1],4), h = floor(n/4). 0
1, 1, 3, 7, 9, 28, 95, 306, 285, 1071, 3948, 14148, 11844, 47160, 182655, 690580, 547965, 2244385, 8961953, 35016345, 26885859, 112052304, 456606332, 1824478488, 1369818996, 5777515212, 23884958520, 97002706248, 71654875560, 304865648208, 1273989485439 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Also middle column of A132885.

a(n) is the k-th term of n-th row of triangle of A132885 where k = floor(n/4). - Altug Alkan, Nov 29 2015

LINKS

Table of n, a(n) for n=0..30.

FORMULA

a(n) = A132885(n, floor(n/4)), that is, a(n) = A132885(A054925(n+2) - 1). - Altug Alkan, Nov 29 2015

MAPLE

a := proc(n) local h; h := iquo(n, 4); binomial(n-h, h)*hypergeom([h-n/2, h-n/2+1/2], [1], 4) end: seq(round(evalf(a(n), 99)), n=0..30);

CROSSREFS

Cf. A132885.

Sequence in context: A018827 A249664 A057840 * A072087 A328462 A328233

Adjacent sequences:  A246656 A246657 A246658 * A246660 A246661 A246662

KEYWORD

nonn

AUTHOR

Peter Luschny, Sep 18 2014

STATUS

approved

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Last modified January 28 13:13 EST 2020. Contains 331321 sequences. (Running on oeis4.)