A338402 a(n) is the denominator of the resistance R(n) = A338401(n)/a(n) of a triangular network of 3*n*(n+1)/2 one Ohm resistors in a hexagonal lattice arrangement.
3, 9, 7, 123, 1773, 21075, 68761, 4989753, 178945525, 396450465051, 144693391952079, 4833128874789907, 751463705427149325, 59315127102256318272081, 30288529373611329886681, 335082000330404529286853990499, 6485606445639875637410148108213, 7842015457241561891262053489240216057
Offset: 1
Links
- Hugo Pfoertner, Table of n, a(n) for n = 1..50
Crossrefs
Cf. A338401.
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