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A005575
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Number of arrangements of pennies in rows (see references for precise definition).
(Formerly M1390)
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4
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0, 0, 1, 2, 5, 11, 20, 37, 63, 110, 174, 283, 435, 671, 1001, 2160, 3127, 4442, 6269, 8739, 12109, 16597, 22618, 30576
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,4
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REFERENCES
| F. C. Auluck, On some new types of partitions associated with generalized Ferrers graphs. Proc. Cambridge Philos. Soc. 47, (1951), 679-686.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
E. M. Wright, Stacks, III, Quart. J. Math. Oxford, 23 (1972), 153-158.
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CROSSREFS
| Cf. A005576, A005577.
Sequence in context: A038377 A022908 A026390 * A050407 A113032 A100134
Adjacent sequences: A005572 A005573 A005574 * A005576 A005577 A005578
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KEYWORD
| nonn,nice
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), R. K. Guy
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