Pentagonal numbers P = (p+q+r+s)/4 which are the arithmetic mean of four consecutive primes such that p < P < q < r < s.
A234539
Pentagonal numbers P = (p+q+r+s)/4 which are the arithmetic mean of four consecutive primes such that p < P < q < r < s.
Terms
- a(0) =852a(1) =172212a(2) =272001a(3) =341055a(4) =777240a(5) =1451892a(6) =1710402a(7) =2361910a(8) =2922526a(9) =3950382a(10) =4794522a(11) =5414050a(12) =6272015a(13) =7989142a(14) =10580176a(15) =10780301a(16) =11325882a(17) =12173777a(18) =12483395a(19) =14432055a(20) =14665630a(21) =15890910a(22) =16581775a(23) =16962972a(24) =17124772
External references
- oeis: A234539