A322492 Records in the number of ways to represent a number as truncated triangular number A008912.

1, 2, 4, 6, 8, 12, 16, 18, 24, 32, 36, 48, 64, 72, 96, 108, 128, 144, 192

Offset: 1

Author

Hugo Pfoertner, Dec 12 2018

Keywords

• nonn
• more

Comments

The numbers where the record is first achieved are provided as A322491.

Crossrefs

Cf. A008867, A008912, A319602, A321740, A322491.

Programs

PARI

v=vectorsmall(20000000);for(n=1,5100,for(k=1,n-1,my(t=n*(n-3)/2-k^2+k*n+1);v[t]++));vm=0;for(k=1,#v,if(v[k]>vm,print1(v[k],", ");vm=v[k])) \\ Hugo Pfoertner, Sep 18 2020