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A203643 Number of arrays of n 0..12 integers with new values introduced in order 0..12 but otherwise unconstrained 1
1, 2, 5, 15, 52, 203, 877, 4140, 21147, 115975, 678570, 4213597, 27644437, 190899321, 1382958439, 10480136006, 82864611947, 682068020031, 5832484170844, 51717380273487, 474706578749477, 4503047451718545, 44074082550176545 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 12 of A203647

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 79*a(n-1) -2783*a(n-2) +57695*a(n-3) -782133*a(n-4) +7284057*a(n-5) -47627789*a(n-6) +219409685*a(n-7) -703202566*a(n-8) +1519272964*a(n-9) -2082477528*a(n-10) +1606986720*a(n-11) -518918400*a(n-12)

CROSSREFS

Sequence in context: A287673 A203642 A192867 * A192128 A203644 A203645

Adjacent sequences:  A203640 A203641 A203642 * A203644 A203645 A203646

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 04 2012

STATUS

approved

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Last modified April 18 22:45 EDT 2021. Contains 343098 sequences. (Running on oeis4.)