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

1,2

Comments

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

Links

Table of n, a(n) for n=1..19.

Prog

(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

Crossrefs

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

Sequence in context: A064527 A333978 A007694 * A377386 A332276 A317246

Adjacent sequences: A322489 A322490 A322491 * A322493 A322494 A322495

Keyword

nonn,more

Author

Hugo Pfoertner, Dec 12 2018

Status

approved