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A001372
Number of mappings (or mapping patterns) from n points to themselves; number of endofunctions.
(Formerly M2671 N1069)
+0
22
1, 1, 3, 7, 19, 47, 130, 343, 951, 2615, 7318, 20491, 57903, 163898, 466199, 1328993, 3799624, 10884049, 31241170, 89814958, 258604642, 745568756, 2152118306, 6218869389, 17988233052, 52078309200, 150899223268, 437571896993
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.
AT&T Labs Research
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