A344377 Numbers that are both 11-gonal numbers (A051682) and 11-gonal pyramidal numbers (A007586).
0, 1, 23725, 1519937678700, 7248070597636
Offset: 1
Links
- Numberphile, Cannon Ball Numbers.
Programs
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PARI
for(k=0, 1e5, if(ispolygonal(m=k*(k+1)*(3*k-2)/2, 11), print1(m", ")))
Comments