A068298
1/9 the number of colorings of an n X n octagonal array with 9 colors.
Original entry on oeis.org
1, 336, 3120768, 803828696832, 5741675134355623680, 1137328489147110235271041536, 6247483084664157761011047760647844608, 951691164013203510495082805169876313498509196032
Offset: 1
A068299
1/10 the number of colorings of an n X n octagonal array with 10 colors.
Original entry on oeis.org
1, 504, 9853704, 7488942792408, 221253369424029100872, 254101505958294674877998194968, 11344162587174574603922830864958174183688, 19687269229964173171963421211996119947570831281276072
Offset: 1
A068300
1/11 the number of colorings of an n X n octagonal array with 11 colors.
Original entry on oeis.org
1, 720, 26910720, 52288926842880, 5281821340632604016640, 27736206226949123988070609059840, 7571810592000511584502349629565976352849920, 107458741981038717371365660998262273071288547237109760000
Offset: 1
A068301
1/12 the number of colorings of an n X n octagonal array with 12 colors.
Original entry on oeis.org
1, 990, 65675610, 292254818279490, 87238205544516133249890, 1746783780641161331912282302353810, 2346167125778415534349931707837063900925570370, 211381076411597878243848286563025939634200193105055412862370
Offset: 1
A068302
1/13 the number of colorings of an n X n octagonal array with 13 colors.
Original entry on oeis.org
1, 1320, 146520000, 1368698694000000, 1075984617953259154800000, 71185491858527630409715040263200000, 396336553255260873925931533264339353950473200000, 185705162149755607151153966767311643039842133737264420356400000
Offset: 1
A068303
1/14 the number of colorings of an n X n octagonal array with 14 colors.
Original entry on oeis.org
1, 1716, 303771468, 5550709388138772, 10469390085669243613847820, 2038288377309848857407579410051499636, 40962006853292026329447493002836988654168890167788, 84970500229420999013828420742335437041383054287385138553076248252
Offset: 1
A068304
1/15 the number of colorings of an n X n octagonal array with 15 colors.
Original entry on oeis.org
1, 2184, 592510464, 19977134899857408, 83707407272669822670292992, 43590120924896822733942257303419219968, 2821017309275220614373517914989957826683223925291008, 22689081840779777447950160850969786755578939429093239677401474639872
Offset: 1
A295177
Chromatic invariant of the n X n king graph.
Original entry on oeis.org
1, 2, 48, 31328, 473555616, 155337138737984, 1070159970425515438368, 152060635426686819239358391520, 440726752780548858707046038903585268960, 25867445082047583284454362951686346866758358099808
Offset: 1