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A034271
a(n) = f(n,n+4) where f is given in A034261.
0
0, 1, 15, 125, 814, 4641, 24388, 121380, 581400, 2707386, 12339569, 55304535, 244567050, 1069784625, 4637437560, 19951650840, 85290143760, 362608278750, 1534330716750, 6465583372794, 27147098904156, 113618646478106, 474177584413720
OFFSET
0,3
CROSSREFS
Cf. A034261.
Sequence in context: A264046 A349295 A027839 * A171220 A071080 A193365
KEYWORD
nonn
EXTENSIONS
Corrected and extended Apr 21 2000 - N. J. A. Sloane.
STATUS
approved