login
A351685
a(n) is the row of the Trithoff (tribonacci) array that contains the tails of the sequence which is n times the tribonacci numbers.
2
1, 7, 10, 81, 101, 121, 141, 161, 1126, 1251, 1376, 1501, 1626, 1751, 1876, 2001, 2126, 2251, 2376, 2501, 2626, 17117, 17895, 18673, 19451, 20229, 21007, 21785, 22563, 23341, 24119, 24897, 25675, 26453, 27231, 28009, 28787, 29565, 30343, 31121, 31899, 32677, 33455
OFFSET
1,2
COMMENTS
This sequence is increasing.
The first term of the row a(n) in the Trithoff array is sequence A351689.
EXAMPLE
Consider twice the tribonacci numbers: 0, 0, 2, 2, 4, 8, 14, 26, 48, and so on. The first few terms can be found in the first row of the Trithoff array A136175. The tail starting with 14, 26, and 48 is the seventh row of the Trithoff array. Thus, a(2) = 7.
CROSSREFS
KEYWORD
nonn
AUTHOR
Tanya Khovanova and PRIMES STEP Senior group, May 08 2022
STATUS
approved