This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A383492 #17 Jun 10 2025 13:54:39 %S A383492 1,1,2,2,4,4,10,13,29,47,99,175,358,669,1346,2600,5191,10137,20093, %T A383492 39320,77437,151314,295745,574011,1110144,2130239,4059919,7662738, %U A383492 14316799,26413683,48057066,86015788,151180505,260256043,437720722,716963561,1139830037,1751982279,2592522277 %N A383492 Number of polyforms with n cells on the faces of a triakis icosahedron up to rotation and reflection. %C A383492 These are "free" polyforms. %C A383492 The triakis icosahedron is the polyhedral dual of the truncated dodecahedron. %H A383492 Bert Dobbelaere, <a href="/A383492/b383492.txt">Table of n, a(n) for n = 0..60</a> %H A383492 Wikipedia, <a href="https://en.wikipedia.org/wiki/Triakis_icosahedron">Triakis icosahedron</a> %Y A383492 Cf. A383493 (one-sided). %Y A383492 Cf. A030135 (dodecahedron), A030136 (icosahedron), A340635 (deltoidal hexecontahedron), A383490 (rhombic triacontahedron), A383494 (pentakis dodecahedron), A383496 (disdyakis triacontahedron). %Y A383492 Cf. A057784 (triakis triangular tiling). %K A383492 nonn,fini,full %O A383492 0,3 %A A383492 _Peter Kagey_, Apr 28 2025 %E A383492 More terms from _Bert Dobbelaere_, Jun 10 2025