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A151519 Number of 1-sided polytans (polyaboloes) with n cells. 3
1, 4, 6, 22, 56, 198, 624, 2182, 7448, 26319, 92826, 332181, 1192845, 4315845, 15678200, 57227380, 209623109, 770516966, 2840466846, 10499678185, 38905008340, 144475534207 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Eric Weisstein's World of Mathematics, Polytan
CROSSREFS
Cf. A006074.
Sequence in context: A083157 A192154 A289385 * A061595 A062940 A061596
KEYWORD
nonn,hard,more
AUTHOR
Ed Pegg Jr, May 13 2009
EXTENSIONS
a(13)-a(14) from George Sicherman, Sep 27 2012
a(15) from George Sicherman, Aug 06 2013
a(15) corrected and a(16)-a(20) from John Mason, Jan 07 2022
a(21)-a(22) from Aaron N. Siegel, Jun 07 2022
STATUS
approved

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Last modified March 19 04:58 EDT 2024. Contains 370952 sequences. (Running on oeis4.)