4t3tq4t4tq452, 372, 525, 715, 946, 1222, 1547, 1925 (sequence A002412 in the OEIS)
The numbers have the form:
n ( n + 1 ) ( 4 n − 1 ) 6 {\displaystyle {n(n+1)(4n-1)} \over 6}
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